Mechanically Strong and Flexible Hydrolyzed Polymers of Intrinsic Microporosity (PIM-1) Membranes

被引：31
|
作者：
Yong, Wai Fen [1 ]
Chung, Tai-Shung [1 ]
机构：
[1] Natl Univ Singapore, Dept Chem & Biomol Engn, 4 Engn Dr 4, Singapore 117585, Singapore
来源：
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 2017年 / 55卷 / 04期
关键词：
dual-mode model; diffusion; gas permeability; gas solubility; polymers of intrinsic microporosity; mechanical properties; positron annihilation lifetime spectroscopy; GAS PERMEATION PROPERTIES; HIGH-MOLECULAR-WEIGHT; TEMPERATURE-DEPENDENCE; CARBOXYLATED POLYMERS; TRANSPORT PROPERTIES; BLEND MEMBRANES; FREE-VOLUME; PLASTICIZATION; DEHYDRATION; SORPTION;
D O I：
10.1002/polb.24279
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A systematic strategy to molecularly design flexible tough hydrolyzed polymers of intrinsic microporosity (hPIM-1) films from the PIM-1 polymer is explored in this study. Flexible films can be fabricated from N-methyl-2-pyrrolidone (NMP) by appropriate hydrolysis conditions. The optimal weight ratio of NaOH/H2O/EtOH in the base-catalyzed reaction is 0.5/2/2. Because of the highly polar carboxylic acid groups, the resultant hPIM-1 has a lower water contact angle. The hPIM-1 has one-half fractional free volume compared to PIM-1 which is in good agreement with permeability. Moreover, hPIM-1 follows as the same dual-mode sorption model as PIM-1. To the best of our knowledge, this is the first ever reported flexible hPIM-1 film in the literature. (C) 2017 Wiley Periodicals, Inc.
引用
收藏
页码：344 / 354
页数：11
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